diff --git a/src/Microsoft.TestPlatform.CommunicationUtilities/DataCollectionRequestSender.cs b/src/Microsoft.TestPlatform.CommunicationUtilities/DataCollectionRequestSender.cs
index 92c56960d6..a804beb0a0 100644
--- a/src/Microsoft.TestPlatform.CommunicationUtilities/DataCollectionRequestSender.cs
+++ b/src/Microsoft.TestPlatform.CommunicationUtilities/DataCollectionRequestSender.cs
@@ -103,7 +103,7 @@ public void SendTestHostLaunched(TestHostLaunchedPayload testHostLaunchedPayload
         var isDataCollectionStarted = false;
         BeforeTestRunStartResult? result = null;
 
-        EqtTrace.Verbose("DataCollectionRequestSender.SendBeforeTestRunStartAndGetResult: Send BeforeTestRunStart message with settingsXml {0} and sources {1}: ", settingsXml, sources.ToString());
+        EqtTrace.Verbose("DataCollectionRequestSender.SendBeforeTestRunStartAndGetResult: Send BeforeTestRunStart message with settingsXml {0} and sources {1}: ", settingsXml, string.Join(" ", sources));
 
         var payload = new BeforeTestRunStartPayload
         {